/*isr.h -- Interface and structures for high level interrupt service routines.*/
/*Part of this code is modified from Bran's kernel development tutorials.*/
/*Rewritten for JamesM's kernel development tutorials.*/

#ifndef ISR_H
#define ISR_H

#include "common.h"

typedef struct registers
{
   u32int ds;                  /*Data segment selector*/
   u32int edi, esi, ebp, esp, ebx, edx, ecx, eax; /*Pushed by pusha.*/
   u32int int_no, err_code;    /*Interrupt number and error code (if applicable)*/
   u32int eip, cs, eflags, useresp, ss; /*Pushed by the processor automatically.*/
} registers_t; 

typedef void (*isr_t)(registers_t);
void irq_handler(registers_t regs);

#define IRQ0 32
#define IRQ1 33
#define IRQ2 34
#define IRQ3 35
#define IRQ4 36
#define IRQ5 37
#define IRQ6 38
#define IRQ7 39
#define IRQ8 40
#define IRQ9 41
#define IRQ10 42
#define IRQ11 43
#define IRQ12 44
#define IRQ13 45
#define IRQ14 46
#define IRQ15 47

/*Enables registration of callbacks for interrupts or IRQs.*/
/*For IRQs, to ease confusion, use the #defines above as the*/
/*first parameter.*/
void register_interrupt_handler(u8int n, isr_t handler); 

#endif

